205147470 has 64 divisors (see below), whose sum is σ = 539343360. Its totient is φ = 49526400.

The previous prime is 205147457. The next prime is 205147487. The reversal of 205147470 is 74741502.

205147470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87615 + ... + 89925.

It is an arithmetic number, because the mean of its divisors is an integer number (8427240).

Almost surely, 2^205147470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205147470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269671680).

205147470 is an abundant number, since it is smaller than the sum of its proper divisors (334195890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205147470 is a wasteful number, since it uses less digits than its factorization.

205147470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601.

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 205147470 is about 14322.9700132340. The cubic root of 205147470 is about 589.7782083136.

Adding to 205147470 its reverse (74741502), we get a palindrome (279888972).

The spelling of 205147470 in words is "two hundred five million, one hundred forty-seven thousand, four hundred seventy".